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Battery leaking charge overnight

Discussion in 'Gen 2 Prius Main Forum' started by Simoncherry, Dec 13, 2011.

  1. Simoncherry

    Simoncherry New Member

    Joined:
    Dec 13, 2011
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    Location:
    London
    Vehicle:
    2006 Prius
    Model:
    Two
    Hi there
    My 2006 Prius battery runs down regularly overnight.
    It seems to be something connected to the immobiliser and/or the interior lighting.
    Has anyone experienced this or have a solution?
    Cheers
    Simon
     
    #1 Simoncherry, Dec 13, 2011
  2. Feri

    Feri Active Member

    Joined:
    Jun 25, 2011
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    Location:
    Maldon Victoria Australia
    Vehicle:
    2010 Prius
    Model:
    III
    How old is your battery mate?
     
    #2 Feri, Dec 13, 2011
  3. David Beale

    David Beale Senior Member

    Joined:
    Jul 24, 2006
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    Location:
    Edmonton Alberta
    Vehicle:
    2012 Prius
    I presume you are talking of the 12V battery? If it's the "traction battery" ignore it. The charge display is unreliable in those situations as temperature affects the reading as well.

    If it's the 12V, check the light switch in the hatch area and the two in the cabin. They are all three position switches, labled OFF, Cabin or door, and ON. You want OFF or Cabin/door. If you're wondering if one of the door switches is malfunctioning, make sure the overhead light is on "Cabin/door", close the door, move about 10' away and watch to see it go out. If it goes out you're fine.
    Finally, make sure the hatch is -fully- closed (slam it shut).

    And as posted above, if your 12V battery is the original, it's probably at end of life and will self discharge due to plate leakage.
     
    #3 David Beale, Dec 13, 2011
  4. richard schumacher

    richard schumacher shortbus driver

    Joined:
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    Location:
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    Vehicle:
    2004 Prius
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    Attempting to lock the car will remind one of common battery-draining situations. If they exist the car will give a long warning beep instead of locking. If the 12V battery has been killed once it is now at death's door and should be replaced before you get stranded.
     
    #4 richard schumacher, Dec 13, 2011
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